Observation information
- date-obs: 2018-02-02
- time-obs: 22:18:31.973200000
- date-end: 2018-02-03
- time-end: 00:42:16.971700000
- obs_id: A04_174T01_9000001876
- exposure: 4832.06924807
- sourceid: Crab
- observer: mithunnps
- ra_pnt: 83.63308
- dec_pnt: 22.0145
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A04_174T01_9000001876_12712cztM0_level2.evt
| modeM0/AS1A04_174T01_9000001876_12712cztM0_level2_quad_clean.evt
|
| Size (bytes) | 616,412,160 | 106,816,320 |
| Size | 587.9 MB
| 101.9 MB
|
| Events in quadrant A | 3,664,544 | 714,383 |
| Events in quadrant B | 5,898,967 | 616,480 |
| Events in quadrant C | 4,289,932 | 707,235 |
| Events in quadrant D | 4,308,389 | 676,788 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15891 | 4 |
| B | 0 | 22473 | 3 |
| C | 0 | 17796 | 3 |
| D | 0 | 17881 | 3 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 154 | 0 |
| B | 0 | 154 | 0 |
| C | 0 | 154 | 0 |
| D | 0 | 154 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7465 | 63 | 0.843938% |
| B | 7465 | 1125 | 15.070328% |
| C | 7465 | 131 | 1.754856% |
| D | 7465 | 146 | 1.955794% |
Noise dominated fraction
Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.
| Quadrant |
# 1 sec bins |
Bins with >0 counts |
Bins with >2000 counts |
High rate bins dominated by noise |
Noise dominated (total time) |
Noise dominated (detector-on time) |
Marked lightcurve |
| A | 8626 | 7470 | 4 | 4 | 0.05% | 0.05% |  |
| B | 8626 | 7470 | 804 | 804 | 9.32% | 10.76% |  |
| C | 8626 | 7470 | 115 | 115 | 1.33% | 1.54% |  |
| D | 8626 | 7470 | 103 | 103 | 1.19% | 1.38% |  |
Top noisy pixels
Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1
| Pixel properties |
Quadrant properties |
| Quadrant |
DetID |
PixID |
Counts |
Sigma |
Mean |
Median |
Sigma |
| A | 11 | 29 | 55994 | 293.95 | 912 | 893 | 187.4 |
| A | 7 | 16 | 34983 | 181.86 | 912 | 893 | 187.4 |
| A | 15 | 239 | 33171 | 172.2 | 912 | 893 | 187.4 |
| B | 4 | 239 | 2562793 | 16215.2 | 827 | 808 | 158.0 |
| B | 11 | 51 | 19191 | 116.35 | 827 | 808 | 158.0 |
| B | 12 | 111 | 17405 | 105.04 | 827 | 808 | 158.0 |
| C | 15 | 208 | 830449 | 4051.34 | 883 | 893 | 204.8 |
| C | 14 | 234 | 8419 | 36.76 | 883 | 893 | 204.8 |
| C | 13 | 61 | 6460 | 27.19 | 883 | 893 | 204.8 |
| D | 1 | 52 | 613318 | 2863.39 | 874 | 855 | 213.9 |
| D | 13 | 104 | 235949 | 1099.11 | 874 | 855 | 213.9 |
| D | 10 | 157 | 39387 | 180.14 | 874 | 855 | 213.9 |
Detector plane histogram (DPH)
Histogram calculated using DETX and DETY for each event in the final _common_clean file
| Quadrant A |
 |
 |
Quadrant B |
| Quadrant D |
 |
 |
Quadrant C |
Count rate plots and images
| Plot type |
Count rate plots |
Images |
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data. |
 |
 |
Quadrant-wise count rates
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins |
 |
 |
Housekeeping plots
| Parameter |
Plot |
| CZT HV Monitor |  |
| D_VDD |  |
| Temperature 1 |  |
| Veto HV Monitor |  |
| Veto LLD |  |
| Alpha Counter |  |
| _CPM_Rate |  |
| CZT Counter |  |
| +2.5 Volts monitor |  |
| +5 Volts monitor |  |
| _ROLL_ROT |  |
| _Roll_DEC |  |
| _Roll_RA |  |
| Veto Counter |  |